Rate-Distortion Optimization for Multichannel Audio Compression
Venue
2013 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA)
Publication Year
2013
Authors
Minyue Li, Jan Skoglund, W. Bastiaan Kleijn
BibTeX
Abstract
Multichannel audio coding is studied from a rate-distortion theoret- ical
viewpoint. Two practical coding techniques, both of which are based on
rate-distortion optimization, are also proposed. The first technique decorrelates a
multichannel signal hierarchically using el- ementary unitary transforms. The
second method rearranges a mul- tichannel signal into sub-signals and compresses
them at optimized bit rates using a conventional codec. Both objective and
subjective tests were conducted to illustrate the efficiency of the methods.
